<http://webisa.webdatacommons.org/449804706>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/449804706>	<http://www.w3.org/ns/prov#value>	"was required on all existing utilities and other systems." .
<http://webisa.webdatacommons.org/prov/273379415>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/449804706> .
<http://webisa.webdatacommons.org/449804706>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<archive.org> .